"V-shaped" marking

A “V-shaped” marking on the outside surface of the outer rings of matched bearing sets indicates how the bearings should be mounted to obtain the proper preload in the set.

The marking also indicates how the bearing set should be mounted in relation to the axial load. The “V-shaped” marking should point in the direction that the axial load acts on the inner ring (fig. 2). In applications where there are axial loads in both directions, the “V-shaped” marking should point in the direction of the heavier of the two loads.